Borehole Seismic Data

Science operator: Texas A&M University

Hole: U1513E

Expedition: 369

Location: Mentelle Basin (SE Indian Ocean)

Latitude: 33° 47.619' S

Longitude: 112° 29.1204' E

Logging date: 23-24 November, 2017

Sea floor depth (driller's): 2800 m DRF

Sea floor depth (logger's): 2799.5 m WRF

Total penetration: 3574 m DRF (774 m DSF)

Total core recovered: 49.99 m (74 % of cored section)

Oldest sediment recovered: Older than Late Albian

Lithology: Volcaniclastic siltstone and sandstone, phyric and porphyritic basalt.

SEISMIC TOOL USED: VSI (Versatile Seismic Imager)

The logging data was recorded by Schlumberger in LDF/DLIS format. All processing, including first arrival picking and stacking, was performed by Schlumberger during Expedition 369. The data was then converted into SEGY format at LDEO, using code developed in house.

Stacks are generally calculated with at least nine good traces. Data was acquired in 11 stations, between 3051.1 and 3440.9 m WRF, for a total of 34 shots. Of these, only 3 stations acquired good quality waveforms to generate a wavefield plot. The depths are 3326.1. 3374.1, and 3440.2 m WRF.

All the data in the SEGY files are sorted shot by shot (i.e. chronologically).

Additional information about the drilling and logging operations can be found in the Operations and Downhole Measurements sections of the expedition report, Proceedings of the International Ocean Discovery Program, Expedition 369. For further questions about the logs, if the hole is still under moratorium please contact the staff scientist of the expedition.

After the moratorium period you may direct your questions to:

Cristina Broglia

Phone: 845-365-8343

Fax: 845-365-3182

E-mail: Cristina Broglia

Gilles Guerin

phone: 845-365-8671

fax: 845-365-3182

E-mail: Gilles Guerin